Full Charge Capacity Dropping on Coconut Battery

[hj576]

So I got my Macbook Pro 13 inch without touchbar on 15th November 2016. Everything was great and I am getting great battery life
But Recently, Every time I open coconut Battery it seems like my full charge capacity has dropped a few 10th of a percentage.
at the moment its at 96.6%, it was 97% last night.
I saw this in start as well where the Full Charge capacity went down below 100% but after keeping it plugged in for a while it went back up.
Last night I had it plugged in for a good 5-6 hours yet the Full Charge Capacity did not go above 97%, and now its even further down.
Should I be worried about this? Or is coconut battery just not calibrated correctly, Since I am getting great battery life (though 3% should not really cause a significant drop)
My charge cycles are just 12 so far.

Any help would be great

I have attached some images from Coconut Battery for reference as well

[doublepost=1483352005][/doublepost]And right after posting this the Full Charge went up a bit.....
Is there a way to recalibrate it ?

 

[SoyCapitanSoyCapitan]

Every calculation in cases like these have a few percent margin of error.

 

[Fzang]

Sounds like OCD. Stop looking at coconutBattery every five minutes. If it has dropped significantly within a few months it'll show, and that should be covered by the warranty as a manufacturing defect.

 

[hj576]

Sounds like OCD. Stop looking at coconutBattery every five minutes. If it has dropped significantly within a few months it'll show, and that should be covered by the warranty as a manufacturing defect.

not OCD fear of hard earned cash going down the drain

As i said i wasnt worried when it dropped to 99.5 or 99%
but 3 percent in a month (since it was at 100% in Start of December )kinda scared me

 

[idark77]

...~3% with 12 cycle count is not good...

 

[hj576]

...~3% with 12 cycle count is not good...

thats what worries me, hopefully its just miscalculation on part of coconut battery
it did show 102% of full charge capacity when the laptop was new

 

[Weaselboy]

thats what worries me, hopefully its just miscalculation on part of coconut battery
it did show 102% of full charge capacity when the laptop was new

Coconut battery is spot on accurate.

You have nothing to worry about here and what you are seeing is normal. That capacity number will fluctuate up and down a little over time.

 

[SoyCapitanSoyCapitan]

I ran Geekbench yesterday. Ran it again today. 2% slower. Whyyyyyy!!!???

#marginoferror #softwareisntlawsofphysics

 

[MrGuder]

Can someone tell me which is my manufacture date of my MacBook Pro. When I look at coconut battery the top say one date but at the bottom there is another manufacture date with another date which is the top date the date you ordered and the bottom date the date they made the laptop?

 

[hj576]

Can someone tell me which is my manufacture date of my MacBook Pro. When I look at coconut battery the top say one date but at the bottom there is another manufacture date with another date which is the top date the date you ordered and the bottom date the date they made the laptop?

one is the manufacturing date of your laptop
and one is for your battery

 

[evec]

Coconut battery just enquire the system to get those information.

The battery is normally and it should degrade when you start to use this.
Also, battery will faster degrade in initially period.
As battery tend to reduce the capacity on temperature low, so it should be normal.

Also, don't need recalibrate the battery because Apple nowadays use advantage IC will continuous adjust of reading and no need calibrate.

 

[hj576]

A thing i noticed was, I am from Pakistan studying in Amsterdam, I bought this laptop here in Amsterdam and for the first month used it in Amsterdam and saw no drop in performance of battery.
I visited Pakistan at end of December for 15 days, during this time i saw in drop in percentage. Pakistan is famous for its sub standard electricity supply which fluctuates and the voltage is not stable at 220 and usually is a few volts down.
During these 15 days I would see full capacity drop ever day by 0.1-0.2%
I have been back in Amsterdam for 2 weeks now and again the battery percentage is stable and actually has gone up a few tenth of a percentage.

It might have just been substandard quality of voltage control that caused the problem? it is famous that battery life of devices is usually lower when used in Pakistan...

or i am just thinking too much into this thing xD

 

[MrGuder]

Is there anyway to determine how many hrs your battery lasts within 1 full charge. I know activity monitor tells you how much battery is left but when you exit that app it all goes back to zero. I charged it yesterday to 100% and today I have 41% left on my battery but I have no way of knowing how many hours I have run my laptop since 100%, do I have to count it manually? I guestimate I've been on it for about 4 hrs so far. I don't see where coconut battery tells you how many hrs you have been using since full charge, only how much battery you have left.

 

[MrGuder]

Sorry still trying to learn here. I noticed tonight that activity monitor does actually show you how much time is on your battery.

 

[Supra Mac]

You can search the MacBook forum and see that this has happened before on the 12 inch, they were getting exchanges under 90% on a relatively new machine. I'm at 96%, but never started over 97% on nTB with 12 cycles. I wouldn't be concerned about it just yet.

 

[dazultra]

Is there something wrong with my 13" toucher?? 4300 battery capacity . 12 cycles!!

Mines on the right. Looks as Low as old gold ultra thin MacBook.

Why the hell is this thing so heavy, with minuscule battery inside? Some one laughed at me and said there phone has more capacity than my MacBook Pro

 

[trfjason]

Is there something wrong with my 13" toucher?? 4300 battery capacity . 12 cycles!!

Mines on the right. Looks as Low as old gold ultra thin MacBook.

Why the hell is this thing so heavy, with minuscule battery inside? Some one laughed at me and said there phone has more capacity than my MacBook Pro

Your battery seems normal to me.

 

[JackieInCo]

I'm not sure what Apple has done with the recent batteries on MBPs.

My 2015 15" has 15 cycles, 93.3% capacity. I bought it a year ago in June.
My 2012 13" non retina MBP has 12 cycles, 93.9% capacity and i Bought it too a year ago in June, both computers brand new at BestBuy.

 

[Weaselboy]

Is there something wrong with my 13" toucher?? 4300 battery capacity . 12 cycles!!

That is totally normal and there is nothing wrong.

 

[JackieInCo]

The magsafe connector got yanked out of my 15" 2015 MBP while I was sleeping last night and I only discovered it when I opened the lid and it told me it would shut down soon due to low battery. I have 16 cycles now and the capacity reads 93.8 and before this cycle, it was 93.3. It seems to have stabilized a bit over the last 5-6 cycles.

 

[sojers92]

Is there something wrong with my 13" toucher?? 4300 battery capacity . 12 cycles!!

Mines on the right. Looks as Low as old gold ultra thin MacBook.

Why the hell is this thing so heavy, with minuscule battery inside? Some one laughed at me and said there phone has more capacity than my MacBook Pro

Is not about how big you have it, but how you use it (cit.). Jokes aside, battery size only matters relatively.

I'm not sure what Apple has done with the recent batteries on MBPs.

My 2015 15" has 15 cycles, 93.3% capacity. I bought it a year ago in June.
My 2012 13" non retina MBP has 12 cycles, 93.9% capacity and i Bought it too a year ago in June, both computers brand new at BestBuy.

How come that you have such small number of cycles? I have 1300 cycles on my 2012 machine and still 88% of capacity

 

[JackieInCo]

Is not about how big you have it, but how you use it (cit.). Jokes aside, battery size only matters relatively.



How come that you have such small number of cycles? I have 1300 cycles on my 2012 machine and still 88% of capacity

I bought my 2012 brand new a year ago in July. I don't really have a need to bring it or my 2015 MBP anywhere with me so they sit at home. I only use them on battery power over a month so the battery gets used occasionally.

 

[jerryk]

I ran Geekbench yesterday. Ran it again today. 2% slower. Whyyyyyy!!!???

#marginoferror #softwareisntlawsofphysics

I would not accept that. Computers are deterministic in behavior. There is a reason. If we spend enough time analyzing the results of the individual tests, I bet one can find exactly that changed, and then determine why it changed.

 

[leman]

And thats why people shouldn't use these tools. You can always find problem if you look. Diagnostics tools start making sense when your computer starts exhibiting problems, so that you can narrow it down. And yes, it is possible to predict problems, but that calls for much more complex models and approaches.

I would not accept that. Computers are deterministic in behavior.

You wish Ever done multicore programming?

There is a reason.

There is always a reason. Most of the time, it makes much more sense to sweep that reason into the normal error term. Otherwise you will end up with reasons like "my dog has farted and it increased the room temperature by 0.01 degree and the CPU was able to maintain its max clock for 0.001sec slower".

 

[Newtons Apple]

not OCD fear of hard earned cash going down the drain

As i said i wasnt worried when it dropped to 99.5 or 99%
but 3 percent in a month (since it was at 100% in Start of December )kinda scared me

Then return it and see if you can get a refund because your battery IS going to show wear. The battery testing apps are not the best. Wait a week and test again.